b'COMBINATION Squares33HaNDHC s R quaRes and ulesFORGED AND HARDENED STEEL HEADSCombination square with square head has the same features as the 11 Series except that the square heads are forged hardened steel with smooth, black enamel finish.Cat. No. EDP Size Graduation BladeC33H-6-4R 56392 6" 4R8ths, 16ths, Quick Reading 32nds, 64ths Satin ChromeC33H-6-16R 56394 6" 16RQuick Reading 32nds, 64ths, Aircraft Quick Reading 50ths, 100ths Satin ChromeC33HC-6-16R 56395 6" Satin Chrome - Center Head33H-12-4R 50209 12" Regular 33HC-12-4R 50210 12" 4R8ths, 16ths, Quick Reading 32nds, 64ths Regular - Center HeadC33H-12-4R 56396 12" Satin ChromeC33HC-12-4R 56397 12" Satin Chrome - Center HeadC33H-12-16R 56398 12" 16RQuick Reading 32nds, 64ths, Aircraft Quick Reading 50ths, 100ths Satin Chrome C33HC-12-4R435CAST IRON HEADSCombination set with square, center and reversible protractor head and blade includes a reversible lock bolt, scriber, spirit level in both square head and protractor head. Cast iron head with black wrinkle finish.F EaturEs Direct reading double 180 protractor scale Hardened steel, photo-engraved blade Cast iron heads with black wrinkle finishCat. No. EDP Size Graduation Blade435-12-4R 51556 12" 4R8ths, 16ths, Quick Reading 32nds, 64ths RegularC435-12-4R66682 12" Satin Chrome - Center HeadC43-12-4Rstarrett.com 69'